Hormone synthesized as peptide precursor is/are:
Correct Answer: All
Description: All - A, B, C,- Sterod hormones are synthesized from cholesterolQ and example includes adrenocoical hormones (i.e. coisol & aldosteroneQ), sex hormones (i.e. testosterone, estrogen & progesterone)Q and vitamin D3 = 1, 25- (OH)2 cholecalciferol (a secosteroid because one of the rings of steroid nucleus , the B ring, is open)- Amine hormones are derived from aminoacid tyrosine and examples include catecholamines (adrenaline/epinephrine and noradrenaline/nor epinephrine)Q from adrenal medulla, thyroid hormones (triiodothyronine = T3, tetraiodothyronine = T4 = thyroxine)Q and prolactin inhibiting factor /PIF (dopamine) from hypothalamus.- All remaining hormones are either low molecular weight proteins (i.e. poly peptides) or glycoproteins. They are synthesized initially as larger peptide precursorQ (eg prepro-insulin) and then cleaved off until the final smaller active molecule is produced. Some are also coupled with carbohydrates to form glycoproteins.A, B, C,
Category:
Physiology
Get More
Subject Mock Tests
Practice with over 200,000 questions from various medical subjects and improve your knowledge.
Attempt a mock test nowMock Exam
Take an exam with 100 random questions selected from all subjects to test your knowledge.
Coming SoonGet More
Subject Mock Tests
Try practicing mock tests with over 200,000 questions from various medical subjects.
Attempt a mock test now